Zimmerman friend takes the stand

Mark Osterman took the stand in George Zimmerman’s second-degree murder trial on Tuesday, calling Zimmerman the “best friend I’ve ever had” and testifying about what Zimmerman told him the night of the shooting. NBC’s Kerry Sanders reports.

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This content comes from Closed Captioning that was broadcast along with this program.

>>>to
florida
and new developments of the murder trial of
georgezimmerman
. the prosecution trying to paint the picture that
zimmerman
's life was never in danger when he shot and killed trayvon martin.
kerry sanders
at the courthouse again this morning.

>>good morning. the judges expected to decide whether
georgezimmerman
's studies in
criminal justice
can be brought up in court. process cue tors would like the jury to hear what he learned in college about
florida
's
stand your ground
law.

>>exhibit 70.

>> reporter: georgezimmerman
's injuries again on display in court and the lead detective on the stand for a second day.

>>did you feel he exaggerated the manner in which he was hit.

>>yes, sir.

>>he was on top of me like this.

>> reporter: the day after
georgezimmerman
shot and killed 17-year-old trayvon martin he described what happened in this police video tape.

>>he just kept slamming.

>> reporter: but in court tuesday a medical examiner that analyzed the photos of
zimmerman
told the juror the injuries were not life threatening.

>>if you look at the injuries, they're so minor.

>> reporter: she testified as an expert
witness for the prosecution
saying
zimmerman
's injuries were not consistent with his head being repeatedly slammed into the sidewalk.

>>using the word slam implies great force and this -- the resulting injuries are not great force.

>> reporter: but on cross-examination,
zimmerman
's
defense lawyer
asked the doctor if the injuries could have come from multiple impacts.

>>anything that would medically exclude that the right side was hit four times.

>>it's possible.

>> reporter: also on the stand tuesday, mark.

>>best friend
i ever had.

>> reporter: he wrote a book about what he says his
best friendgeorgezimmerman
told him the night of the shooting.

>>do you recall if he told you that martin touched the gun or was reaching for it.

>>i thought he said he had grabbed the gun.

>> reporter: the jury also saw an interview that aired on fox news last year.

>>and tonight in an interview that you will only see --

>> reporter: georgezimmerman
was asked if he regrets having a gun that night.

>>i feel that it was all god's plan and for me to second guess it or judge it --

>>is there anything you might do differently in retrospect now that time has passed a little bit?

>>no, sir.

>> reporter: in that interview,
georgezimmerman
says he knew nothing about
florida
's
stand your ground
law but prosecutors believe records from his college will show otherwise.
georgezimmerman
pled not guilty saying that he shot and killed trayvon martin in self-defense.